Knock Knock !

Knock Knock
Who's there?
Avocado!
Avocado who?
Avocado a cold!

Knock Knock
Who's there?
Axel!
Axel who?
Axeldental Tourist!

Knock Knock
Who's there?
Atch!
Atch who?
I'm sorry I didn't know you had a cold!

Knock Knock
Who's there?
Athena!
Athena who?
Athena flying saucer!

Knock Knock
Who's there?
Argo!
Argo who?
Argo down the shops!